It was a painstaking task to find what you needed for lots of reasons.
Now of course, it's all just a click away. However, what if you still need those old newspaper articles.
Luckily, Google has that covered for you with news.google.com/newspapers. From here you access articles from various newspapers from not only different parts of the world, but also different centuries.
You or your students only have to enter the topic they are looking for and the results of any newspapers that may have contained that topic will appear just like any normal Google search. The difference of course is once you select a source, you will see a scanned version of that article.
If the information they are looking for can't be found there, then use
news.google.com/news/advancded_news_search to search the entire News Index.